Method of cooling and storing propane and the like



July 10, 1956 l' L. WISSMILLER 2,753,69l

METHOD OF COOLNG AND STORING PROPANE AND THE LKE F11ed Sept 15 1951 2 Sheetssheet 1 July 10, 1956 l. L. WISSMILLER ME...THOD OF' COOLING AND STORNG PROPANE AND THE LIKE F' 1ed sept. 15 1951 2 SheetS-Sheet 2 

1. THE METHOD OF STORING LARGE BATCHES OF THE ORDER OF BARGE LOADS OF LIQUID PROPANE WHICH COMPRISES THE STEPS OF; RECEIVING LARGE BATCHES OF LIQUID PROPANE IN A SHORT PERIOD OF TIME AT PRESSURES OF THE ORDER OF 250 P.S.I.G. AND AT TEMPERATURES ABOUT 40* F. AND CONDUCTING SAID LIQUID TO A NORMALLY CLOSED STORAGE TANK OF SUFFICIENT CAPACITY TO RECEIVE SUCH BATCHES IN A SHORT PERIOD OF TIME; PERMITTING SOME OF THE LIQUID TO VAPORIZE IN SAID TANK AND THEREBY COOL THE CONTENTS OF THE TANK; COOLING AND CONDENSING SAID VAPORS BY THE USE OF A HEAT EXCHANGER; RETURNING THE CONDENSED VAPORS TO THE LIQUID CONTENTS OF THE TANK AND THUS FURTHER COOLING THE LIQUID PROPANE IN THE TANK AND REDUCING THE PRESSURE WITHIN THE TANK TO APPROXIMATELY 75 P.S.I.G.; AND MAINTAINING THE PRESSURE IN THE TANK AT APPROXIMATELY 75 P.S.I.G. 